[knowledge of building materials] structure and working principle of pipe heater
What is the pipe heater? I believe many people do not know that the pipe heater is an energy-saving device that pre-heats the material. It is installed before the material device and directly heats the material, causing it to circulate and heat at high temperatures. To achieve the purpose of energy conservation. It is widely used in the preheating of fuel oils such as heavy oil, asphalt and clear oil. So, what is the specifics of the water pipeline heater ? The following is for everyone's introduction. I hope to help everyone.
Electric heater structure and working principle
(1) Pipe heater structure
The water pipeline heater is composed of several tubular electric heating elements, a cylinder body, a baffle plate, etc. The tubular electric heating element is a high-temperature resistance wire placed in the metal tube, and the gap part is tightly filled with good insulation and heat conduction. The performance of crystalline magnesium oxide powder, the use of tubular heating elements as a heating element, with advanced structure, high thermal efficiency, mechanical strength, corrosion resistance, wear and other characteristics. A diversion barrier is installed inside the cylinder to make the water evenly heated when it circulates.
(2) Working principle
The water pipeline heater adopts a digital temperature regulator, a solid state relay and a temperature measuring element to form a measurement, adjustment, and control loop. In the electric heating process, the temperature measuring element sends the electric signal of the outlet temperature of the water pipeline heater to a digital temperature controller. After amplification, the measured temperature value is displayed after comparison. At the same time, the signal is output to the input of the solid state relay so as to control the heater so that the control cabinet has good control accuracy and adjustment characteristics. The interlocking device can be used to remotely start and shut down the water line heater.
Pipe heater features
The pipeline heater adopts stainless steel cylinder body, small volume, small footprint, easy movement, strong corrosion resistance, thick insulation layer between the stainless steel liner and stainless steel shell, the lowest temperature loss, maintaining the temperature Save energy.
The main components of high-quality heating elements (stainless steel electric heating tubes) are made of imported materials, and advanced production equipment and processes are used in the process to match the different voltages to achieve the highest performance. Its insulation, pressure resistance, moisture resistance are higher than the national standard, the use of safe and reliable.
The direction of the water flow is reasonable, the heating is uniform, there is no dead angle of high and low temperature, and the thermal efficiency is high.
The pipeline heater is equipped with a domestic famous brand temperature controller, users can freely set the temperature. All overheat protectors are configured to control temperature and water overtemperature protection to avoid damage to heating elements and systems.
Installation and use
The control cabinet should be installed in a dry, ventilated, easy-to-operate place. The water pipeline heater shell and the control cabinet shell should be reliably grounded. The water pipeline heater should be installed horizontally, and the base nut should be tightened to make it stable. When installing the body and external piping, pay attention to the direction of import and export. Before using the water pipeline heater, the insulation resistance of the power access terminal and the metal shell shall be measured to be not less than 2 MΩ, and the relative humidity in the use environment shall not be greater than 85%. The outgoing and incoming ends of the power cord should be solid and reliable and must not be loosened. Before use, check whether the output wire of the power cable and the temperature measuring element are connected properly, and whether the control cabinet components and nuts are loose and damaged. If any abnormalities are tightened or replaced in time, check the power after confirming the error. The main steps are as follows:
1. Close the water pipeline switch, the power indicator light is on, the digital display control light is on and the measured temperature indication value is displayed.
2, the temperature setting
3, after the temperature is set, if there is no abnormal situation can press the "heater work" button, AC contactor pull, solid state relay into the line end, by digital display temperature control table output PID signal control heater jobs. When the system is turned on for the first time, temperature overshoot may occur, but it tends to fall within a constant range.
maintenance
The water pipeline heater, especially the control part, is a precision instrument. Be careful when transporting it. Do not impact or hit it. Simplified part should be properly hoisted so as not to damage the internal heating elements. Water pipeline heaters and control cabinets are placed in the warehouse and rain is forbidden.
Common faults and repairs
Fault 1: The power indicator is off, the digital meter does not work, and the voltmeter has no indication. Check whether the water pipe switch is closed and the control circuit fuse is in good condition.
Fault 2: Heater temperature does not rise. Check whether the fuse is in good condition and whether the electric heater is damaged.
Fault 3: Three-phase imbalance.
(1) Check if the three-phase incoming line voltage is missing.
(2) Open the water pipe heater shield, use a multimeter to check whether the single heating element breaks, and then replace it with a special wrench. When replacing, do not damage the rubber gasket. In case of damage to the rubber gasket, be sure to use the rubber. pad.
Classification of pipe heaters
The use of a wide range of pipe heaters can be subdivided into different heating gases: nitrogen heaters and hydrogen heaters, which can also be referred to as pipeline gas heaters. Water line heaters and tank heaters, these can also be called piped liquid heaters.
1) Pipeline gas heater
Gas heaters are electric heating devices that primarily heat the gas stream. The heating element of the gas heater is a stainless steel electric heating tube, and a plurality of baffle plates (baffles) are arranged in the heater cavity to guide the gas flow and prolong the residence time of the gas in the inner cavity so as to fully heat the gas and make the gas Even heating, improve heat exchange efficiency. The heating element of the air heater is a stainless steel heating tube in which a heating wire is inserted into the seamless steel tube, and the void portion is filled with a magnesium oxide powder having a good thermal conductivity and insulation and then shrinking the tube. When the current passes through the high-temperature resistance wire, the generated heat is diffused through the crystalline magnesium oxide powder onto the surface of the heating tube and then transferred to the heated air to achieve the purpose of heating.
2) Pipeline liquid heater
The so-called liquid heater utilizes benzoic acid as a heater for the heating agent. The wire reinforces the refractory fiber layer, and the double-layer coating tightly combined and distributed along the entire length of the resistance wire strand forms a resistance wire strand with the center thereof. Integral type can be directly bent according to need and can be directly in contact with the heating element of the direct heating monomer, heating the monomer according to the shape and size of the heating object repeatedly and around to form a sheet, and then use the wire to multiple parallel monomers Laterally weave together to form a braided high-temperature electric heater that can be used directly on the heated object.
Summary: The above is related to the structure and working principle of the pipe heater. It is for reference only and we hope to help everyone. If you want to know more related information, you can pay attention to this website information.
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In organic chemistry, amines are compounds and functional groups that contain a basic nitrogen atom with a lone pair. Amines are formally derivatives of ammonia, wherein one or more hydrogen atoms have been replaced by a substituent such as an alkylor aryl group (these may respectively be called alkylamines and arylamines; amines in which both types of substituent are attached to one nitrogen atom may be called alkylarylamines).
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